Abstract
A modified uni-traveling-carrier photodiode-based V-band optoelectronic
mixer is demonstrated. The relative optical local oscillator (LO) and
optical intermediate frequency (IF) signal levels and the reverse bias can
be optimized for maximum up-converted power. It was found that the optimum
optical IF percentage relative to the total incident optical power was
approximately 1/3 for all photocurrent levels while the optimum reverse bias
increased linearly with photocurrent. A simple analytical model that
explains these observations is developed. A high up-converted power of ${-}4.7$ dBm was achieved at 60 GHz and photocurrent of 70 mA. The maximum
up-converted power is primarily limited by the saturation characteristic of
the photodiode.
© 2010 IEEE
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